Added a brief info abount redirect-gateway

source/manual/how-tos/sslvpn_instance_roadwarrior.rst

@@ -114,8 +114,6 @@ In order to setup a tunnel on both ends, we need to configure certificates to wa
       it is also possible to clients to share a certificate. When adding a certificate from the user manager the CN is automatically
       set to its name. In this example we will only authenticate using the certificate, no additional user or password will be required.
 
-.. Note::
-   In order for the redirect-gateway option to work, a manual NAT outbound rule must be created.
 
 .....................
 Static keys
@@ -148,6 +146,7 @@ TLS static key          choose the prepared static key
 Authentication          Local Database  :sup:`2`
 Strict User/CN Matching [V]  :sup:`3`
 Local Network           192.168.8.0/24
+Redirect gateway        Leave empty :sup:`4`
 ======================= =======================================
 
 .. admonition:: Note  :sup:`1`
@@ -165,6 +164,10 @@ Local Network           192.168.8.0/24
    Selecting the "Strict User/CN Matching" option warrants only matching user/certificate can login, when sharing a single
    vertificate between clients this option needs to be deselected.
 
+.. admonition:: Note  :sup:`4`
+
+   If you want all outgoing IP traffic to be redirected over the VPN, you can set the option to :code:`default`.
+   For this to work, a manual NAT outbound rule must be created.
 
 Next go to :menuselection:`Firewall --> Rules --> WAN` and add a rule to allow traffic on port :code:`1194/UDP` from the other
 host. At minimum we should add a rule similar to this one: